Sendai weather in October
In October, Sendai sees average daytime highs of 18°C and overnight lows near 11°C, with 141 mm of rain across 11 wet days and about 11 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.
Highs ease over the month, from about 20°C in the first days to 16°C by the end. The sky is clear or mostly clear about 28% of the time in October, and the air most often feels dry.
Daylight stretches from about 11 h 36 min at the start of October to 10 h 24 min by month's end. Set against the rest of the year, October is Sendai's 6th-clearest and 7th-windiest month. For the whole year in context, see Sendai's year-round climate.
- Daytime high
- 18°
- 6th warmest
- Overnight low
- 11°
- 7th coldest
- Rainfall
- 141 mm
- 11 wet days
- Daylight
- 11 hours
- 5:52 AM – 4:51 PM
- Cloud cover
- 63%
- 6th clearest
- Wind
- 9 km/h
- 7th windiest
- Solar energy
- 2.98 kWh/m²
- Travel score
- 5.6
- out of 10
Sendai is city in Miyagi Prefecture, Japan.
- Air quality
- Good
- PM2.5 7 µg/m³ · 2010
- Density
- 1,395/km²
- people per km²
- Founded
- 1889
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in October
Highs ease over the month, from about 20°C in the first days to 16°C by the end.
A typical October day in Sendai reaches about 18°C in the afternoon and slips back to 11°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 21°C. Set against its neighbours, October runs about 5°C cooler than September and about 6°C warmer than November.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 15 |
| Avg low (°C) | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 7 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 21 | 14 |
| 2 | 21 | 14 |
| 3 | 20 | 13 |
| 4 | 20 | 13 |
| 5 | 20 | 13 |
| 6 | 20 | 13 |
| 7 | 20 | 13 |
| 8 | 20 | 12 |
| 9 | 19 | 12 |
| 10 | 19 | 12 |
| 11 | 19 | 12 |
| 12 | 19 | 11 |
| 13 | 19 | 11 |
| 14 | 19 | 11 |
| 15 | 18 | 11 |
| 16 | 18 | 11 |
| 17 | 18 | 10 |
| 18 | 18 | 10 |
| 19 | 18 | 10 |
| 20 | 17 | 10 |
| 21 | 17 | 9 |
| 22 | 17 | 9 |
| 23 | 17 | 9 |
| 24 | 17 | 9 |
| 25 | 17 | 9 |
| 26 | 16 | 8 |
| 27 | 16 | 8 |
| 28 | 16 | 8 |
| 29 | 16 | 8 |
| 30 | 16 | 8 |
| 31 | 15 | 7 |
How October really feels in Sendai
Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Sendai weather by month
How October compares with the rest of the year at a glance. October is the 6th-warmest and 4th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 4° / -3° | 63 | 10.9 | 9.9 | 9.6 | 0.0 |
| Feb | 4° / -3° | 49 | 9.2 | 7.7 | 10.5 | 0.0 |
| Mar | 8° / -0° | 87 | 11.6 | 5.4 | 11.7 | 1.4 |
| Apr | 14° / 5° | 94 | 11.2 | 1.1 | 13 | 4.0 |
| May | 19° / 11° | 103 | 11.4 | 0 | 14 | 5.8 |
| Jun | 22° / 16° | 129 | 13.4 | 0 | 14.6 | 5.8 |
| Jul | 26° / 20° | 187 | 17.4 | 0 | 14.4 | 5.3 |
| Aug | 27° / 21° | 169 | 16.2 | 0 | 13.5 | 5.4 |
| Sep | 24° / 17° | 167 | 14.3 | 0 | 12.3 | 5.8 |
| Oct | 18° / 11° | 141 | 11 | 0 | 11 | 5.6 |
| Nov | 12° / 4° | 63 | 9.3 | 0.9 | 9.9 | 3.3 |
| Dec | 6° / -0° | 58 | 11 | 6 | 9.4 | 0.6 |
Cloud cover in October
The sky is clear or mostly clear about 28% of the time in October.
Beyond those clear spells, partly cloudy skies cover about 17% of October, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to open up as the month goes on.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 34 | 36 | 36 | 36 | 36 | 38 | 38 | 39 | 39 | 40 | 41 | 41 | 43 | 43 | 44 | 44 | 45 | 46 | 47 | 47 | 49 | 49 | 51 | 51 | 52 | 53 | 55 | 56 | 57 | 58 | 59 |
| Cloudier (%) | 66 | 64 | 64 | 64 | 64 | 62 | 62 | 61 | 61 | 60 | 59 | 59 | 57 | 57 | 56 | 56 | 55 | 54 | 53 | 53 | 51 | 51 | 49 | 49 | 48 | 47 | 45 | 44 | 43 | 42 | 41 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 34 | 66 |
| 2 | 36 | 64 |
| 3 | 36 | 64 |
| 4 | 36 | 64 |
| 5 | 36 | 64 |
| 6 | 38 | 62 |
| 7 | 38 | 62 |
| 8 | 39 | 61 |
| 9 | 39 | 61 |
| 10 | 40 | 60 |
| 11 | 41 | 59 |
| 12 | 41 | 59 |
| 13 | 43 | 57 |
| 14 | 43 | 57 |
| 15 | 44 | 56 |
| 16 | 44 | 56 |
| 17 | 45 | 55 |
| 18 | 46 | 54 |
| 19 | 47 | 53 |
| 20 | 47 | 53 |
| 21 | 49 | 51 |
| 22 | 49 | 51 |
| 23 | 51 | 49 |
| 24 | 51 | 49 |
| 25 | 52 | 48 |
| 26 | 53 | 47 |
| 27 | 55 | 45 |
| 28 | 56 | 44 |
| 29 | 57 | 43 |
| 30 | 58 | 42 |
| 31 | 59 | 41 |
Chance of precipitation in October
Sendai gets around 141 mm of rain over 11 wet days in October. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 35% and peaks near 41% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 41 | 41 | 40 | 40 | 40 | 39 | 38 | 38 | 37 | 36 | 36 | 35 | 34 | 34 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 31 | 31 | 30 |
| Rain chance (%) | |
|---|---|
| 1 | 41 |
| 2 | 41 |
| 3 | 40 |
| 4 | 40 |
| 5 | 40 |
| 6 | 39 |
| 7 | 38 |
| 8 | 38 |
| 9 | 37 |
| 10 | 36 |
| 11 | 36 |
| 12 | 35 |
| 13 | 34 |
| 14 | 34 |
| 15 | 33 |
| 16 | 33 |
| 17 | 33 |
| 18 | 33 |
| 19 | 33 |
| 20 | 33 |
| 21 | 33 |
| 22 | 33 |
| 23 | 33 |
| 24 | 33 |
| 25 | 33 |
| 26 | 33 |
| 27 | 32 |
| 28 | 32 |
| 29 | 31 |
| 30 | 31 |
| 31 | 30 |
Humidity in October
Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, October lands in the dry band about 74% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 40 | 42 | 44 | 46 | 49 | 51 | 54 | 56 | 59 | 62 | 65 | 68 | 72 | 74 | 76 | 79 | 81 | 84 | 86 | 88 | 89 | 91 | 92 | 92 | 94 | 95 | 95 | 95 | 96 | 96 | 97 |
| Comfortable (%) | 37 | 36 | 36 | 35 | 34 | 33 | 32 | 31 | 29 | 27 | 25 | 23 | 20 | 18 | 17 | 15 | 13 | 12 | 10 | 9 | 8 | 7 | 6 | 6 | 5 | 4 | 4 | 4 | 3 | 3 | 3 |
| Humid (%) | 19 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 8 | 7 | 7 | 6 | 5 | 5 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
| Muggy (%) | 4 | 4 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 40 | 37 | 19 | 4 |
| 2 | 42 | 36 | 17 | 4 |
| 3 | 44 | 36 | 16 | 4 |
| 4 | 46 | 35 | 15 | 3 |
| 5 | 49 | 34 | 14 | 3 |
| 6 | 51 | 33 | 13 | 3 |
| 7 | 54 | 32 | 12 | 2 |
| 8 | 56 | 31 | 11 | 2 |
| 9 | 59 | 29 | 10 | 2 |
| 10 | 62 | 27 | 9 | 2 |
| 11 | 65 | 25 | 8 | 2 |
| 12 | 68 | 23 | 8 | 1 |
| 13 | 72 | 20 | 7 | 1 |
| 14 | 74 | 18 | 7 | 1 |
| 15 | 76 | 17 | 6 | 1 |
| 16 | 79 | 15 | 5 | 1 |
| 17 | 81 | 13 | 5 | 1 |
| 18 | 84 | 12 | 4 | 0 |
| 19 | 86 | 10 | 4 | 0 |
| 20 | 88 | 9 | 3 | 0 |
| 21 | 89 | 8 | 3 | 0 |
| 22 | 91 | 7 | 2 | 0 |
| 23 | 92 | 6 | 2 | 0 |
| 24 | 92 | 6 | 2 | 0 |
| 25 | 94 | 5 | 1 | 0 |
| 26 | 95 | 4 | 1 | 0 |
| 27 | 95 | 4 | 1 | 0 |
| 28 | 95 | 4 | 1 | 0 |
| 29 | 96 | 3 | 1 | 0 |
| 30 | 96 | 3 | 1 | 0 |
| 31 | 97 | 3 | 0 | 0 |
Wind in October
Winds average 9 km/h in October.
Across October, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 8 | calm |
| 2 | 8 | calm |
| 3 | 8 | calm |
| 4 | 8 | calm |
| 5 | 8 | calm |
| 6 | 8 | calm |
| 7 | 8 | calm |
| 8 | 8 | calm |
| 9 | 8 | calm |
| 10 | 8 | calm |
| 11 | 8 | calm |
| 12 | 8 | calm |
| 13 | 8 | calm |
| 14 | 8 | calm |
| 15 | 8 | calm |
| 16 | 8 | calm |
| 17 | 9 | calm |
| 18 | 9 | calm |
| 19 | 9 | calm |
| 20 | 9 | calm |
| 21 | 9 | calm |
| 22 | 9 | calm |
| 23 | 9 | calm |
| 24 | 9 | calm |
| 25 | 9 | calm |
| 26 | 9 | calm |
| 27 | 9 | calm |
| 28 | 9 | calm |
| 29 | 9 | calm |
| 30 | 9 | calm |
| 31 | 9 | calm |
Sunrise & sunset in October
Daylight runs from about 11 h 36 min at the start of October to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 72 minutes over October. Sunrise moves from 5:37 AM to 6:08 AM, and sunset from 5:14 PM to 4:32 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 11.6 | 11.6 | 11.5 | 11.5 | 11.4 | 11.4 | 11.4 | 11.3 | 11.3 | 11.2 | 11.2 | 11.2 | 11.1 | 11.1 | 11.0 | 11.0 | 10.9 | 10.9 | 10.9 | 10.8 | 10.8 | 10.8 | 10.7 | 10.7 | 10.6 | 10.6 | 10.6 | 10.5 | 10.5 | 10.4 | 10.4 |
| Sunrise (AM) | 5:37 | 5:38 | 5:39 | 5:40 | 5:41 | 5:42 | 5:43 | 5:44 | 5:45 | 5:46 | 5:47 | 5:48 | 5:49 | 5:50 | 5:51 | 5:52 | 5:53 | 5:54 | 5:55 | 5:56 | 5:57 | 5:58 | 5:59 | 6:00 | 6:01 | 6:02 | 6:03 | 6:04 | 6:06 | 6:07 | 6:08 |
| Sunset (PM) | 5:14 | 5:12 | 5:11 | 5:09 | 5:07 | 5:06 | 5:04 | 5:03 | 5:01 | 5:00 | 4:58 | 4:57 | 4:55 | 4:54 | 4:53 | 4:51 | 4:50 | 4:48 | 4:47 | 4:46 | 4:44 | 4:43 | 4:42 | 4:41 | 4:39 | 4:38 | 4:37 | 4:36 | 4:35 | 4:34 | 4:32 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.6 | 5:37 | 5:14 |
| 2 | 11.6 | 5:38 | 5:12 |
| 3 | 11.5 | 5:39 | 5:11 |
| 4 | 11.5 | 5:40 | 5:09 |
| 5 | 11.4 | 5:41 | 5:07 |
| 6 | 11.4 | 5:42 | 5:06 |
| 7 | 11.4 | 5:43 | 5:04 |
| 8 | 11.3 | 5:44 | 5:03 |
| 9 | 11.3 | 5:45 | 5:01 |
| 10 | 11.2 | 5:46 | 5:00 |
| 11 | 11.2 | 5:47 | 4:58 |
| 12 | 11.2 | 5:48 | 4:57 |
| 13 | 11.1 | 5:49 | 4:55 |
| 14 | 11.1 | 5:50 | 4:54 |
| 15 | 11.0 | 5:51 | 4:53 |
| 16 | 11.0 | 5:52 | 4:51 |
| 17 | 10.9 | 5:53 | 4:50 |
| 18 | 10.9 | 5:54 | 4:48 |
| 19 | 10.9 | 5:55 | 4:47 |
| 20 | 10.8 | 5:56 | 4:46 |
| 21 | 10.8 | 5:57 | 4:44 |
| 22 | 10.8 | 5:58 | 4:43 |
| 23 | 10.7 | 5:59 | 4:42 |
| 24 | 10.7 | 6:00 | 4:41 |
| 25 | 10.6 | 6:01 | 4:39 |
| 26 | 10.6 | 6:02 | 4:38 |
| 27 | 10.6 | 6:03 | 4:37 |
| 28 | 10.5 | 6:04 | 4:36 |
| 29 | 10.5 | 6:06 | 4:35 |
| 30 | 10.4 | 6:07 | 4:34 |
| 31 | 10.4 | 6:08 | 4:32 |
Solar energy in October
Average shortwave solar energy reaching the ground each day in October, about 2.98 kWh/m².
For context, solar energy here swings from a low near 2.06 kWh/m² to a high of 5.34 kWh/m² in May across the year — October's 2.98 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 3.2 | 3.2 | 3.2 | 3.2 | 3.1 | 3.1 | 3.1 | 3.1 | 3.1 | 3.1 | 3.1 | 3.1 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.7 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 3.2 | Moderate |
| 2 | 3.2 | Moderate |
| 3 | 3.2 | Moderate |
| 4 | 3.2 | Moderate |
| 5 | 3.1 | Moderate |
| 6 | 3.1 | Moderate |
| 7 | 3.1 | Moderate |
| 8 | 3.1 | Moderate |
| 9 | 3.1 | Moderate |
| 10 | 3.1 | Moderate |
| 11 | 3.1 | Moderate |
| 12 | 3.1 | Moderate |
| 13 | 3.0 | Moderate |
| 14 | 3.0 | Moderate |
| 15 | 3.0 | Moderate |
| 16 | 3.0 | Moderate |
| 17 | 3.0 | Moderate |
| 18 | 3.0 | Moderate |
| 19 | 3.0 | Moderate |
| 20 | 2.9 | Moderate |
| 21 | 2.9 | Moderate |
| 22 | 2.9 | Moderate |
| 23 | 2.9 | Moderate |
| 24 | 2.9 | Moderate |
| 25 | 2.8 | Moderate |
| 26 | 2.8 | Moderate |
| 27 | 2.8 | Moderate |
| 28 | 2.8 | Moderate |
| 29 | 2.8 | Moderate |
| 30 | 2.8 | Moderate |
| 31 | 2.7 | Moderate |
Hazard calendar for Sendai
In October, Sendai sits inside its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Sendai sits in the Pacific typhoon belt; the season peaks July–October.
Sendai's rainy season runs March–October, when most of the year's rain falls.
Is October a good time to visit Sendai?
Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
October is a reasonable time to visit Sendai for sightseeing.
What to pack for Sendai in October
From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In October, Sendai sees daytime highs around 18°C and nights near 11°C. Worth packing: rain gear. About 11 days see rain.
Sea temperature near Sendai in October
The nearest coast averages about 19°C in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 28 km away) is warmest in August at about 24°C and coldest in March near 9°C.
It's comfortable for a long swim from Jul 7 to Oct 10 — about 3.2 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 11 | 9 | 9 | 10 | 14 | 18 | 21 | 24 | 23 | 19 | 17 | 14 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Refreshing | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 11 | Bracing |
| Feb | 9 | Bracing |
| Mar | 9 | Bracing |
| Apr | 10 | Bracing |
| May | 14 | Bracing |
| Jun | 18 | Cool |
| Jul | 21 | Refreshing |
| Aug | 24 | Refreshing |
| Sep | 23 | Refreshing |
| Oct | 19 | Cool |
| Nov | 17 | Cool |
| Dec | 14 | Bracing |
UV index in Sendai in October
Clear-sky midday UV in October peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Sendai peaks around August 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 4 | 6 | 8 | 8 | 8 | 9 | 8 | 5 | 3 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 9 | Very high |
| Sep | 8 | Very high |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Where is Sendai?
Sendai sits at 38.3°N, 140.9°E, 53 m above sea level, in Japan. The nearest listed city is Natori-shi, 11 km away.
Topography around Sendai
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Sendai.
Within 3 km, the terrain around Sendai has only modest variations in elevation — a maximum elevation change of 173 m around an average of 67 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 513 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,978 m.
The land around Sendai is covered by artificial surfaces (74%) and trees (24%) within 3 km, trees (44%) and artificial surfaces (29%) within 16 km, and trees (57%) and water (26%) within 80 km.
Japan travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B
- 100 V · 50 / 60 Hz
- Prices
- ≈ 65% of US
- price level, 2025
- GDP per capita
- $35,951
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.2
- per 100k, 2023
- Road deaths
- 3.6
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Very low
- EF EPI 446
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Sendai (38.2667°, 140.8667°, elevation 53 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).